DC Insulation Monitor for EV Chargers
This DC insulation monitor is designed for use in DC EV chargers and DC charging piles. It features RS485 communication for remote monitoring and control.





Technical Specifications
Overview
Advanced DC Insulation Monitoring
This insulation monitoring device is engineered for high-voltage DC systems, providing real-time safety monitoring for positive and negative electrodes to ground. It integrates essential functions such as DC-to-ground insulation resistance monitoring, voltage reverse connection alarms, and capacitor discharge management. Designed for rapid response, the unit delivers monitoring results within 2.5 seconds of activation, ensuring operational safety in demanding environments like EV charging stations and energy storage systems.
Key Features
Typical Applications
- EV DC charging systems
- Photovoltaic systems
- Energy storage systems
- DC power grids
- Core Features
- Real-time MonitoringFast Response (2.5s)Wide Power RangeRS485 CommunicationDin Rail Mount
Technical Specifications
Measurement Performance
Electrical Parameters
| Parameter | Value |
|---|---|
| Power Supply | 9~30VDC |
| DC Voltage Range | 0~1000V |
| Insulation Resistance Range | 1KΩ~10MΩ |
| Off-line Pressure Test | <2mA |
Accuracy Specifications
- Insulation Accuracy: ≤3KΩ+10% (100-300V)
- Insulation Accuracy: ≤3KΩ+5% (300-1000V)
- Measurement Accuracy: ≤2V+0.3%
Environmental & Physical
Mounting
- Dimensions
- 49mm x 98mm x 62mm
- Operating Temperature
- -40°C to 70°C
- Storage Temperature
- -40°C to 125°C



